id:A046572 - OEIS Search Results

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First numerator and then denominator of the central elements of the 1/4-Pascal triangle (by row).

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1, 1, 1, 4, 5, 2, 19, 2, 35, 1, 259, 2, 483, 1, 1815, 1, 6864, 1, 52195, 2, 99671, 1, 382109, 1, 1469650, 1, 5668327, 1, 21915550, 1, 84913470, 1, 329624730, 1, 2563431075, 2, 4991324415, 1, 19463777025, 1, 75992317170, 1, 297026449005, 1 (list; graph; listen)

	OFFSET	`1,4`
	EXAMPLE	`1/1; 1/1 1/1; 1/1 1/4 1/1; 1/1 5/4 5/4 1/1; 1/1 9/4 5/2 9/4 1/1; 1/1 13/4 19/4 19/4 13/4 1/1; 1/1 17/4 8/1 19/2 8/1 17/4 1/1; 1/1 21/4 49/4 35/2 35/2 49/4 21/4 1/1; ...`
	CROSSREFS	`Cf. A046563.` `Sequence in context: A118472 A111624 A019815 this_sequence A046574 A019743 A010663` `Adjacent sequences: A046569 A046570 A046571 this_sequence A046573 A046574 A046575`
	KEYWORD	`nonn`
	AUTHOR	`Mohammad K. Azarian (ma3(AT)evansville.edu)`
	EXTENSIONS	`More terms from James A. Sellers (sellersj(AT)math.psu.edu), Dec 14 1999`

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

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